A knowledgeable hvac service chapel hill nc will be able to calculate the savings you can expect if your system isn't ENERGY STAR compliant. The Ac maintenance chapel hill nc should also be able to provide comparisons of various ENERGY STAR options.
If a local hvac service chapel hill nc isn't willing to look over your system before giving you a quote, question the quality of service you will receive. While a thorough inspection will usually come with a reasonable price tag, you should expect a clear breakdown of what your Ac maintenance chapel hill nc system's strengths and/or weaknesses are. You should be given a breakdown of how well your home is insulated and how much space the system needs to heat and/or cool. The HVAC specialist should also inspect your duct system, if you have one, to ensure that there aren't any air leaks or blockages.